B. Rosa and G. P. Rocha, “THE VALUE INDEX AND THE NITROGEN BALANCE OF Brachiaria decumbens AND Brachiaria ruziziensis AT DIFFERENT GROWTH STAGES”, Pesq. Agropec. Trop., vol. 18, no. 1, pp. 35–46, Nov. 2007, doi: 10.5216/pat.v18i1.2541.